Keyboard



FIG. 1 is a front view of a keyboard showing a first embodiment of our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top perspective view thereof;

FIG. 8 is a bottom perspective view thereof;

FIG. 9 is a front perspective view thereof with a tablet being attached in a first position;

FIG. 10 is a rear perspective view of FIG. 9;

FIG. 11 is a front perspective view thereof with a tablet being attached in a second position; and,

FIG. 12 is a rear perspective view of FIG. 11.

The features shown in broken lines in the drawings depict environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a keyboard, as shown and described. 